But I think there are a lot more Trump supporters who believe they've gotten raw deals because they've been told they have

Agreed, BW- but I think you have the percentages of the two groups reversed.

Part of the "Make Amerika Great" campaign's appeal was a longing for a return to ther past - a MYTHICAL past that never existed. Like the folks waiting for the railroad to come back thru town or the closed mines to re-open. The railroad ain't coming back, folks- and that economic hole you're in? You've just put into office a cadre of the very people that dug that hole for you.